Window ventilator



Dec. 25, 1951 M. E. ACHLER ETAL WINDOW VENTILATOR 2 SHEETS-SHEET 1 Filed Nov. 7, 1947 IN V EN TORS mat/rice 5 mile)" one By alberl H im'lsune M. E. ACHLER ET AL Dec. 25, 1951 WINDOW VENTILATOR 2 SHEETS-SHEET 2 Filed Nov. '7, 1947 INVENTORS Maurice E Gc/zler and alberl HZIZZZStine Patented Dec. 25, 1951 Mashed-c i-' sit Venetian facturing Company; Ghicago; 111., a corporation ofiIlli-nois I This inventionfelats- 66 times vsmiiats'rs;

The e sv'en'ednsr typeof wisest" ventilator? commonly in use comprises-a panel whose ends ar's'lida' and inwardly m ta-ed channels 'xter'iding brackets fastened't'o th lowerfiririei fefid s ream;

ions. 6 It is another'obje'ct of' ou f inventi'ntii provide a ventilator'dohstiiictd to" produce asubstan conventional' vefitilatorla g Another object-is to provide ventilator" adapted to be held in placeby a window'sash':

many greater draft than is obtainable with this A further object is to provide a ventilator which is adapted tobe interchangeably mounted in, or in planes other thar'iatli plane of a window sash.

It is also an object to provide a ventilator which is readily adjustable to fit window frames of different widths. V I t Further-i objects and advafitag of our'ifive'ntion will appear as the descriptionproee'dsi The invention will bebetter understood upon reference to the following description and the accompanying drawings, sllpwirig an illustrative form of-theinvention andwher eini Fig. 1 is an inside view of a ventilator constructed in accordance with our invention and installed in service in assembly with a window.

Fig. 2 is an enlarged fragmentary sectional view taken as indicated by the line 2-2 in Fig. 1 and showing our ventilator in full lines held in place by a window sash and in dash-dot lines in two other possible positions.

Fig. 3 is an enlarged view of the ventilator as shown in Fig. 1.

Figs. 4, 5 and 6 are enlarged sectional views taken as indicated by the lines 4-4, 5-5 and 6-6 in Fig. 3.

Fig. '7 is a top plan view of Fig. 3.

Fig. 8 is an inside elevational view showing two parts of the ventilator before and after assembly.

Fig. 9 is an outside elevational view of the ventilator.

Referring now more particularly to the draw- 1= Claim; :(01. 160 22 3 I "si e is sews ventusttr'emptuymg s or air ion' comprising a pair shutter my ceiii snseouter ana inner aid rigid shatter bracket-s F6 l-8-; biidgd bly tap and bottom slats or vanes 20 andinteriffediate 6r; 2 1. lit T comprise 2U? pass d re ectivel y 'tlir'o h tiietopam sqttofn aruate strange seat the web 4'0 6: his

acres 1 the shutter I 2 (Fig. 2' such slat secured 4a nge 4W6 trie stner'iegtsef win his fed st sa'tbt "web as merges eridsof tlislats'flf' sea ughnieese imgswet 8 6i el bra3cket28-'at-tiie softheslats were I f "'as m the webwqrsf as" e ls,asiiraiated etthe the intermediate arcuate openings 55 and 56 in the webs of the inner brackets l3 and 28, respectively, and the intermediate slats 34 are passed similarly to the'slats 30 but through the intermediate openings 56 and 55, respectively, of the inner brackets 28 and 18. 'All of the slats 20 and 24 are then passed through the arcuate openings 51 in the web 58 of the outer end bracket l6 and the ends of said slats secured as at 60 to the inside flange 62 of said bracket. All of the slats 30 and 34 are passed through arcuate openings 64 in the web 66 of the outer end bracket 26 and the ends of said slats secured as at 68 to the inside flange 10 of said bracket. Of course, the sequence of as- V sembly may be varied.

The sliding friction between the slats of the respective shutters is preferably such that selfadjustment, as when the ventilator is suspended the-median plane of the ventilator. The upper outer end portions of the arcuate openings are offset at 13 for that purpose. The various slats may be stiff or resilient, as desired, and thevarious web openings are preferably generally arcuate, substantially as shown. The web openings in each bracket are cut so that their respective ends are in parallel lines, and also so that the slats fitted therein overlap slightly, in an up-andappended claim, which is to be interpreted as broadly as the state of the art will permit.

We claim: V

A rectangular window ventilator having air inlet and discharge faces and comprising shutters telescopically connected together for adjustment to fit windows of different widths, each down respect, to preclude the outside air from entering the room in a horizontal path, even when the median plane of the ventilator is somewhat inclined to the vertical. The outer end brackets l6 and 26 may be formed with holes I4, preferably in the upper ends of their webs 58 and B6, respectively, to receive nails, screws or the like 16 for fastening the ventilator to the stiles 18 of a window frame 82. r

The ventilator constructed in accordance with our invention is telescopic and hence capable of adjustment to fit windows of various widths. When disposed in the plane of the window sash 84 with the outer end brackets l6 and 26 disposed in the stile grooves 86, the ventilator may be held in place by the window sash, or the ventilator may rest in either stile groove at any desired angle independently of either window sash. When disposed on the window sill 90 within the Window casing, the ventilator may be secured to the casing vertically or at any desired inclination. The

bottoms of the brackets are preferably bias cut, as shown at 94, providing a fulcrum in the form of a series of alined bracket flange edges 96 adapted to firmly grip the surface on which the ventilator rests and to allow the ventilator readily to be tilted about such fulcrum to the desired inclination.

The echelon arrangement of the slats provides for the incoming air a plurality of rising paths or fines of gradually increasing slope and decreasing size, divertingthe air upward and hence away from immediate contact with occupants of the room, the air issuing from each flue exerting suction on the air at the outlets of the immediately adjacent flues, so that all of the air is accelerated into the room.

The slats may be made of steel or aluminum or other suitable metal, or of wood, plastic or shutter comprising two end brackets, one being disposed between the end brackets of the other shutter, the outermost end brackets being channels, the flanges of each channel extending away from the other channel, each of the innermost end brackets having a web and a flange, the webs of all of said brackets having successively overlapping series of arcuate openings arranged in echelon and respectively in register with the arcuate openings in the other webs, each shutter having transversely concave-convex slats extending through its openings, all of said slats being of gradually increasing slope upward toward said discharge face of the ventilator, an end of each slat of each shutter terminating within and secured to one of said channels, the other end of each of the top and bottom slats of each shutter terminating within and beingsecured to the innermost end bracket of the same shutter, the slats of each shutter slidably passing through the openings in the innermost end bracket of the other shutter, the tops of said brackets being normal to the axes of said brackets, the bottoms of all of said brackets being mitered so as to provide alined bottom edges defining a fulcrum to facilitate tilting of the ventilator to a vertical or inclined position in a window frame.

MAURICE E. ACHLER. ALBERT H. MILSTINE.

REFERENCES CITED The following references are of record in the file of this patenta IlNITED STATES PATENTS Burns Aug. 15, 1944 

